11. Relative humidity is the _____.
A. Temperature at which saturation vapour pressure is achieved
B. Amount of pressure water vapour exerts independent of the pressure of dry air
C. Amount of pressure at a given temperature at which water transforms from a liquid to a gaseous state
D. Amount of water vapour in the air relative to the saturation vapour pressure
1 answer
D. Amount of water vapour in the air relative to the saturation vapour pressure